Significant figures

Front

What are significant figures?

Back

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

How do you determine the number of significant figures in a number?

Back

Count all non-zero digits, any zeros between significant digits, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

How many significant figures are in the number 100.000 cL?

Back

6 significant figures.

Front

How many significant figures are in the number 0.012 km?

Back

2 significant figures.

Front

How many significant figures are in the number 0.000008?

Back

1 significant figure.

Front

How do you round a number to a specific number of significant figures?

Back

Identify the last significant figure you want to keep, look at the next digit, and round up if it is 5 or more, or leave it if it is less than 5.

Front

Round 1047.78 to three significant figures.

Back

1050.

Front

How many significant figures are in the number 4.20 cm?

Back

3 significant figures.

Front

What is the significance of trailing zeros in a decimal number?

Back

Trailing zeros in a decimal number are significant because they indicate precision.

Front

Are leading zeros significant?

Back

No, leading zeros are not significant; they only serve as placeholders.